100k wah pot. Replace the worn out, crackeling pot in your wah pedal.
This pot has a special resistance curve. The resistance is not distributed throughout the whole axis rotation, the endpoints are “dead”. It is made so because the whole span of a pot is often not covered when used in a ah box. The idea is that all resistances in the pot should be available when the plate is moved between its end positions.
Note! Adjust so that the rack gear does not drive the pot passed any of its end positions!